Roswell r



(No Model.)

R. R. HOUSE. PIPE VISE.

No. 446,078. Patentd Feb. 10,1891-.

UNITED STATES PATENT OFFICE.

ROSVELL R. ROUSE, OF INDIANAPOLIS, INDIANA.

PIPE-VISE.

SPECIFICATION forming part of Letters Patent No. 446,078, dated.February 10, 1891.

Application filed October 4, 1890. Serial No. 367,131. (No model.)

To all whom it may concern:

Be it known that I, RoswELL R. Rousn, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented a new and useful Improvement in Pipe-Vises, of which thefollowing is a specification.

My invention relates to an improvement in that class of vises in whichone edge of the bar which carries the movable jaw forms a segment of anut and is engaged by a mutilated screw.

The object of my improvement is to provide an improved construction ofthe bearing in which the screw is mounted, whereby the screw is firmlysupported when in action, and

, may also be readily removed or replaced.

The accompanying drawings illustrate my invention.

Figure 1 represents a side elevation partly in section; Fig. 2, a planof the body of the vise; Fig. 3, a partial vertical section of the upperpart of the vise, having the screw removed; Fig. 4, a rear elevation;and Fig. 5, a section ata, Fig. 1. Fig. (3 is a view in per spective ofthe bearing-plate forming a portion of the screw-shaft bearing.

A is the body of the Vise, having a recessed fixed jaw B, of well-knownform, adapted to support the pipe 0.

D is a bar arranged to slide in a mortiseE in the body of the viseopposite the fixed jaw B'and carrying the serrated jaw F. One

edge of bar D is provided with teeth h,which form segments of internalscrew threads adapted to fit the threads of a short mutilatedscrew-shaft I, having a lever J secured thereto. The threads are cutaway on one side of the screw, as at 70, so that when that side of thescrew is presented to the toothed edge of bar D the bar will slidefreely in the body A without engaging the screw. Screwshaft I is mountedin the body A in suitable bearings, so as to stand parallel with bar Dand engage the teeth of the bar with its screw-threads.

For the purpose of conveniently mounting the screw in its bearings, sothat it shall be firmly supported against the thrust of the movable jawand its bar and at the same time be easily removed for repair andreplaced, the bearings are constructed in the following manner: Theupper part of the casting A, forming the body of the vise, is cored outto form a chamber L, which communicates on one side with the mortise E,and has an opening M in the top, through which the screw-shaft mayeasily pass. In the bottom of said chamber a cylindrical bearing or stepN is formed, adapted to receive the lower end of the screw-shaft, and inthe top, at one side of the opening M, a half-bearing O is formedadapted to receive the upper part of the shaft. Shoulders p p are formedat each end of the screw, and the scr eW-shafahaving been passed intochamber L through the opening M, is placed in the bearingsN and O, andthe shoulders p 19 rest, respectively, against the top and bottom of thechamber. The screw-shaft .is held in place in its bearings by a plate R,which has in one edge a half-bearin g 5. Plate R fits nicely into a slot25, cutin casting A at the top of chamber L, in such a position that thebottom of the plate, when in position in the slot, is flush with theinterior top of the chamber and rests against the upper shoul-.

der of the screw, the bearing 8 resting against and inclosing the shaftand the plate closing the opening M. Plate R is kept from slidingoutward by screws u it. By this construction the end-thrust of the screwis entirely sustained by the casting A.

In operation, the screw-shaft being turned so as to present its plain orunthreaded side to the bar D, the bar slides downward until its jaw Fcomes in contact with the pipe. The screw-shaft is then turned from leftto right, and the threads thereon are brought into engagement with theteeth hon the bar, as with a nut, and the bar and its jaw are therebyforced down against the pipe.

I claim as my invention In a vise, the combination of the casting A,forming the body and fixed'jaw of the vise and having chamber L,bearings N and O, and slot tformed therein, the toothed bar arranged toslide longitudinally in said body, the mutilated screw mounted in saidbearings and arranged to engage said bar, and the plate L, having thebearing 8, all arranged to co-operate as shown and described.

ROSWELL R. ROUSE.

\Vitnesses:

H. P. H001), V. M. H001).

